Southfield Mayor Brenda Lawrence told the crowd at Troy High School waiting for Obama's arrival Monday that she was supporting the Illinois senator. Obama thanked her for her support when he took the stage at 12:35 p.m.

Michigan Education Association President Lu Battaglieri says he also is endorsing Obama. That gives Obama seven Michigan superdelegates, tying the number rival Hillary Rodham Clinton has in the state.

Obama is making his second visit to Michigan in three weeks to introduce himself to voters. He avoided the state for 10 months because Michigan broke Democratic National Committee rules by moving its presidential primary to Jan. 15.